N.J. Stat. § 40:37-96
The provisions of sections 40:37-96 to 40:37-174 of this title shall apply to counties having a population of more than two hundred thousand inhabitants, but shall remain inoperative in any such county until submitted to and approved by the voters thereof in the manner hereinafter in sections 40:37-169 to 40:37-172 of this title provided.
This section shall not require the submission of the question of the adoption of said sections 40:37-96 to 40:37-174 in counties which have heretofore adopted the provisions of an act entitled "An act to establish public parks in certain counties in this state, and to regulate the same," approved March fifth, one thousand eight hundred and ninety-five. Such counties shall be governed by the provisions of said sections 40:37-96 to 40:37-174.
N.J.S. § 40:37-96